Clearing BPROT

Started by Daniel Bull in M68HC1114 years ago 4 replies

Hello - My project uses the 68HC11F1 in expanded mode. I have tried to clear the BPROT register with no success. I modified the startup code...

Hello - My project uses the 68HC11F1 in expanded mode. I have tried to clear the BPROT register with no success. I modified the startup code with the lines ldaa #00; staa BPROT (or $1035) just after initializing the stack pointer. This should execute within the first 64 clock cycles. When I run the program the register does not change. The register reads as 0x1F, which is the defau...


68hc11 interface with pci bus

Started by addicted6220 in M68HC1114 years ago 23 replies

hi everybody, i am rookie in this area (microcontroller). I wanted to=20 build a circuit that microcontroller(68hc11) based connected to...

hi everybody, i am rookie in this area (microcontroller). I wanted to=20 build a circuit that microcontroller(68hc11) based connected to motor.=20 The idea was to control the motor from PC through PCI-bus that=20 interface to microcontroller. so anybody out there, please help me with this? because i am really=20 lost... tell me everything... ------------------------ Yahoo! Groups Sponsor...


EXTERNAL FLASH EEPROM PROGRAMMING

Started by chuc...@yahoo.com in M68HC1114 years ago 2 replies

Hello everyone. I've got a problem that I've been trying to figure out for some time now, and I have yet to find good information regarding the...

Hello everyone. I've got a problem that I've been trying to figure out for some time now, and I have yet to find good information regarding the topic. I'm trying to program an EXTERNAL FLASH EEPROM chip that I have added to the M68HC11EVBU board, circa 1990. It used to have a HC11E9 chip in there, but the person I got the board from burned it up and got a E1 as a replacement. I know that ...


Re: HC711 pinout

Started by BobG...@aol.com in M68HC1114 years ago 5 replies

Mike & Bob.... I think keeping the EVs with the HC11s updated is a good project... I have used many different HC11 variants and written several...

Mike & Bob.... I think keeping the EVs with the HC11s updated is a good project... I have used many different HC11 variants and written several little bootable programs that get downloaded to HC11 ram at poweron to test ram and rom, test the ports by flashing pins etc. You should look at the programs supplied by Technological Arts with their HC11 microstamps... there is asm source t...


Re: HC711 pinout

Started by Mike McCarty in M68HC1114 years ago 15 replies

Mike Phillips wrote: > Mine is the plcc 84. Yes, I see that you actually posted that information in your first message. Sorry to overlook...

Mike Phillips wrote: > Mine is the plcc 84. Yes, I see that you actually posted that information in your first message. Sorry to overlook that. > I'm not troubled at all that the onboard connector > cannot program the chip. Then I don't understand what your question is. I suggested that you program the chips before installing them on the board, and you seemed to reject that. > I


External RAM and EEPROM

Started by chuc...@yahoo.com in M68HC1114 years ago 2 replies

Hello everyone, I have a question regarding the M68HC11EBVU. Its the old board from the 90's with the mc68hc11e1 chip in place of the e9. I've...

Hello everyone, I have a question regarding the M68HC11EBVU. Its the old board from the 90's with the mc68hc11e1 chip in place of the e9. I've installed a 32k SRAM chip and a 128k EEPROM chip on the wirewrap side and I've been wondering on how to interface it correctly so that I can program the external EEPROM via the MCU. I've never used any other software such as pcbug11 etc. How can ...


Questions on Reprogramming MC68C711E9CFN2 chip

Started by Rakesh Krishnan in M68HC1114 years ago 2 replies

Hi All =20=20=20 When i programmed the MC68HC711E9CFN2 Chip with a Version A of Software (= .S19) it programmed sucessfully. I made some...

Hi All =20=20=20 When i programmed the MC68HC711E9CFN2 Chip with a Version A of Software (= .S19) it programmed sucessfully. I made some modifications in the Version A= Software and made it to Version B and created S19 for version B software. = When i tried reprogramming Version B S19 to the same chip MC68HC711E9CFN2 w= hich contains the version A software, I AM NOT ABLE TO REPROGRAM THE ...


C code for MC68C711E9 controller using Freeware GCC Ver.3.3.6

Started by Rakesh Krishnan in M68HC1114 years ago 1 reply

Hi All, =20=20=20 I had written a simple C program for M68HC711E9 Controller using Freeware= GCC version 3.3.6. Also i compiled using GCC...

Hi All, =20=20=20 I had written a simple C program for M68HC711E9 Controller using Freeware= GCC version 3.3.6. Also i compiled using GCC with vectors.c file and Linke= r file memory.x =20=20=20 I generated the .S19 using GCC compiler and flashed it to 68HC711E9 using= EVBplus2 development Board. But the C Code is not working, its not display= ing the LED in Port B. =20=20=20 The...


How to interface flash memory cards to microcontroller for external memory excess?

Started by partha pabbu in M68HC1114 years ago 2 replies

hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memor= y...

hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memor= y excess? Thank you chaitanya =20=09=09=09=09 --------------------------------- Here=92s a new way to find what you're looking for - Yahoo! Answers=20 =20 =20


how to interface flash memory card to 8051 microcontroller?

Started by chaitanyakid in M68HC1114 years ago 1 reply

hi, Iam new to this proffession.I have some doublts to clearify.Plesase kindly show patience to read this mail. I want to interface 8051...

hi, Iam new to this proffession.I have some doublts to clearify.Plesase kindly show patience to read this mail. I want to interface 8051 family microcontrollers to flash memory card.The microtroller which i wamt interface to flash memory card is already interfaced to keypad and LCD display.I have done device driver program for those.Now i want to interface flash memory card for extern...


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